That's incredible. With MP3 already completely patent-free as well, we have an extraordinary free set of audio and video codecs for the next couple of decade, at least until HEVC becomes free.
Opus and Vorbis are far from useable everywhere. On the other hand, there isn't a piece of software or hardware that won't accept MP3. MP3 is the lingua franca of sound, and should stay that way for a century.
Also Vorbis has always been patent free.